m0n0wall Forum - PPTP Cannot see LAN when using 64 bit VISTA

We have successfully set up monowall and it works well when connecting 32 bit version of vista and XP. However, we recently purchased two 64 bit versions of windows Vista ultimate on two laptops, and now, although they can connect to the VPN, they are not able to see any resources on the LAN side. From inside the LAN, I can ping these two new laptops, and the PPTP VPN logs show that they are logged in, but those two computers cannot ping or see anything, to include the monowall.

We are a tech company and feel confident that we are not missing any settings on the Windows Vista 64 bit computers. Has anyone experienced this, and was there a suitable work around?

We deploy monowalls to several clients, and were received the same error when we VPN'ed into their networks as well. We just can't see any resources.

Again, 32 bit versions of Vista and XP work great, so I don't "think" its a configuration issue.